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A telephoto lens offers higher resolution, while a wide-angle lens allows a larger field of view.

The researchers are now designing metalenses with complex functionalities -- such as color or wide-angle imaging -- and developing neural network methods for enhancing the imaging quality of these advanced metalenses.

Each observatory used an array of wide-angle cameras to measure the brightness of thousands of individual stars across the entire sky.

Krupp suggested shooting wide-angle views with a smartphone; the sun in the photo will look small, “but you’ve got the landscape around there.”

For those interested in taking photos of the eclipse with their smartphone, Krupp suggested shooting wide-angle views.